This study was conducted as part of a larger research effort designed to examine the characteristics and social and occupational encounters of Mexican American migrant farm workers in their transition into an urbanized society. Specifically, the investigation was directed at surveying migrant workers in and around the Michigan area. Interviews with a random sample of household heads provided the data. Variables studied were: (1) social characteristics, including household composition and educational level, (2) backgrounds of migratory workers and characteristics of community stabilization, (3) occupational opportunities, (4) employment and income patterns, and (5) occupational and income mobility. Detailed findings of the study are included and tables provide statistical data of the variables studied. Of the sampled population, only 12 percent were born in Michigan or migrated there before age 16. A total of nine percent came before 1919, and 32 percent arrived in the early 1940's. Migration increased immensely in the 1950's, but declined in the late 1950's with the onset of the economic recession. Mostly born in Texas, recent migrants are somewhat younger than the resident Mexican Americans, have higher educational levels, and reside mainly in rural areas. (SN)